25291987624996 has 27 divisors (see below), whose sum is σ = 45490221242067. Its totient is φ = 12304029147840.

The previous prime is 25291987624979. The next prime is 25291987625017. The reversal of 25291987624996 is 69942678919252.

It is a happy number.

The square root of 25291987624996 is 5029114.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 19977413552100 + 5314574072896 = 4469610^2 + 2305336^2 .

It is a super-3 number, since 3×25291987624996³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 372120456 + ... + 372188416.

Almost surely, 2^{25291987624996} is an apocalyptic number.

25291987624996 is the 5029114-th square number.

It is an amenable number.

25291987624996 is a deficient number, since it is larger than the sum of its proper divisors (20198233617071).

25291987624996 is an frugal number, since it uses more digits than its factorization.

25291987624996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136000 (or 68000 counting only the distinct ones).

The product of its digits is 2116316160, while the sum is 79.

The spelling of 25291987624996 in words is "twenty-five trillion, two hundred ninety-one billion, nine hundred eighty-seven million, six hundred twenty-four thousand, nine hundred ninety-six".